Parameters

Specifies the transaction number returned by DDEExecute(В ), DDEPoke(В ), or DDERequest(В ) when the transaction is sent to the server application.

Return Value

Logical

Remarks

An asynchronous transaction allows Visual FoxPro program execution to continue without waiting for the server application to respond to a data request.

DDEExecute(В ), DDEPoke(В ), and DDERequest(В ) wait for the period specified by DDESetOption(В ) for a server application to respond, unless you specify a user-defined function to execute when the server application responds. Specifying a user-defined function to execute in these functions creates an asynchronous transaction.

If DDEAbortTrans(В ) is called before the server has processed the request, the user-defined function will not be called for the transaction.

DDEAbortTrans(В ) returns true (.T.) if the asynchronous transaction is successfully ended and returns false (.F.) if the asynchronous transaction cannot be ended. Use DDELastError(В ) to determine why the transaction could not be ended.